package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
@ComponentScan
//@EnableAspectJAutoProxy//aop
@EnableTransactionManagement
public class EmployeeController {
    @Autowired
    private EmployService employService;

    /**
     * 用户登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //此处的employee是用户登录时传入的，只有账号和密码，其他为空
        //    ①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        String password = DigestUtils.md5DigestAsHex(employee.getPassword().getBytes());
        //    ②. 根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> qw = new LambdaQueryWrapper<>();
        qw.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employService.getOne(qw);//这里的emp是根据employee的账号和密码去匹配的数据库中存在的完整的用户信息
        //   ③. 如果没有查询到, 则返回登录失败结果
        if (emp == null){
            return R.error("用户不存在");
        }
        //    ④. 密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("密码错误");
        }
        //    ⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("用户已禁用");
        }
        //    ⑥. 登录成功，将员工存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee",emp);
        emp.setPassword(null);//是将返回的密码设置为空，不然就将密码暴露了！！！
        return R.success(emp);
    }

    /**
     *
     * 退出登录
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success(null);
    }
    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());

        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

       /* employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        log.info("11111");
        //获得当前登录用户的id
        Employee emp = (Employee) request.getSession().getAttribute("employee");
        log.info("222222");
        employee.setCreateUser(emp.getId());
        employee.setUpdateUser(emp.getId());*/
        employService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page  当前查询页码
     * @param pageSize  每页展示记录数
     * @param name  员工姓名--可选参数
     * @return
     */
    @GetMapping("/page")
    public  R<Page> page(Integer page,Integer pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        //添加过滤条件
        lqw.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        lqw.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employService.page(pageInfo,lqw);
        return R.success(pageInfo);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }
    /**
     * 根据id修改员工信息
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

       /* Employee emp = (Employee) request.getSession().getAttribute("employee");

        employee.setUpdateUser(emp.getId());
        employee.setUpdateTime(LocalDateTime.now());*/
        employService.updateById(employee);
        return R.success("员工信息修改成功！");
    }

}
